|______________|__________|_____|_____|
| 20万千瓦 | | 5000|2000 |
|______________|__________|_____|_____|
|10高压线:3万伏 | |300 | 100 |
|______________|__________|_____|_____|
|11万伏以上 | | 1000 | 500 |
|______________|__________|_____|_____|
| 11大型电话交换台 | | 500 | 200 |
|______________|__________|_____|_____|
| 12广播线接地 | | 1000|1000 |
|______________|__________|_____|_____|
|13发射台:50千瓦 | | 500 | 500 |
|______________|__________|_____|_____|
| 100千瓦 | | 800 | 800 |
|______________|__________|_____|_____|
| 150千瓦 | | 2500|2500 |
|______________|__________|_____|_____|
|14一般建筑物及生活区: | | 100 | 100 |
| 大型房屋 | | | |
|______________|__________|_____|_____|
| 平 房 | | 30 | 30 |
|______________|__________|_____|_____|
|______________|__________|_____|_____|
说明:本附录摘自《地震台站观测规范(试行)》的有关部分,今后《规范》如有变动以新《规范》为准.
其它观测项目避开干扰源的要求,见《规范》.
|